ADTRAN Q2 2026 Earnings Report

ADTRAN EPS Results

• Actual EPS: $0.04
• Consensus EPS: $0.10
• Beat/Miss: Missed by -$0.06
• One Year Ago EPS: N/A

ADTRAN Revenue Results

• Actual Revenue: $281.15 million
• Expected Revenue: $290.19 million
• Beat/Miss: Missed by -$9.04 million
• YoY Revenue Growth: +6.00%

ADTRAN Announcement Details

• Quarter: Q2 2026
• Date: 8/4/2026
• Time: After Market Closes
• Conference Call Date: Tuesday, August 4, 2026
• Conference Call Time: 8:30AM ET

ADTRAN (NASDAQ:ADTN) (NASDAQ: ADTN) is a provider of networking and communications equipment, software and services for telecommunications companies, broadband providers, enterprises and government organizations. The company develops solutions that help service providers build and manage high-speed access networks, including fiber, fixed wireless and other broadband technologies.

Its portfolio includes access and aggregation platforms, optical networking systems, routers, switches, Wi-Fi equipment, cloud and network management software, and related professional and support services. These products are used to deliver broadband, voice, video, business connectivity and other communications services. ADTRAN also offers enterprise networking solutions designed to support secure connectivity across distributed locations.

Founded in 1985 and headquartered in Huntsville, Alabama, ADTRAN expanded its international capabilities through its combination with Germany-based ADVA in 2022. The combined company serves communications providers and business customers across North America, Europe and other global markets. Tom Stanton serves as ADTRAN's president and chief executive officer.

ADTRAN Q2 2026 Earnings Call Transcript

Key Takeaways

• Negative Sentiment: Q2 results missed expectations, with revenue of $281.1 million and non-GAAP operating margin of 3.8%, as a delayed project at one customer, unfavorable mix and supply constraints reduced shipments of higher-margin products.
• Negative Sentiment: The company guided for Q3 revenue of $275 million–$295 million and non-GAAP operating margin of 1.5%–5.5%, while noting that the customer delay is not expected to rebound in the quarter and component availability may remain tight.
• Positive Sentiment: Optical Networking revenue rose 22% year over year to $109.7 million, supported by demand for higher-bandwidth infrastructure, data-center interconnect and AI-related networking; management expects optical revenue to continue growing in Q3.
• Positive Sentiment: Diversification continued to gain traction, with enterprise, government and cloud revenue up 47% year over year and hyperscaler revenue up 97%, while upcoming MicroMux Quattro and LiteWave800 products are attracting interest from multiple hyperscalers.
• Positive Sentiment: ADTRAN completed a refinancing that lowers borrowing costs by 200 basis points and extends maturities to 2031, while generating $25.9 million of operating cash flow and $8.7 million of free cash flow in Q2.

Presentation

[Operator]

Ladies and gentlemen, welcome to the ADTRAN Holdings Inc. second quarter 2026 earnings conference call. Please note that this call is being recorded. After the speaker's remarks, there will be a question and answer session. If you would like to ask a question at this time, simply press star followed by the number one on your telephone keypad. If you would like to withdraw your question, just press star one again. Thank you. Now I would like to turn the call over to Tom Stanton, Chairman and CEO of ADTRAN Holdings Inc. Tom, you may begin.

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

Thank you, operator. Good morning, everyone. Although we are disappointed with the reported results of this past quarter, we believe they were driven by a specific set of factors. As we communicated in our preliminary results press release, a project delay from a single customer, combined with unfavorable impacts from product and customer mix, caused our results to fall short of our guidance. Despite these factors, demand across our end markets remains healthy. Our strategic priorities remain on track, and our customer base continues to diversify. We believe those underlying fundamentals position us well as we look ahead into 2027. As we shared in our pre-announcement, one of our customers adjusted the timing of a project, which affected our results for the quarter. This customer remains committed to its deployment objectives, and we view this as a timing adjustment rather than a change in demand.

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

Overall customer demand remained strong during the quarter, a challenging supply environment limited our ability to fulfill that demand, constraining shipments and resulting in an unfavorable mix. To be clear, absent these incremental supply constraints, we would have met our original revenue guidance. Against this backdrop, ADTRAN delivered second quarter revenue of $281.1 million, consistent with our preliminary results, and non-GAAP operating margin of approximately 3.8%, also in line with our pre-announcement. While these results reflected the items I just discussed, several indicators of our strategic progress continued to strengthen during the quarter. Our optical business continued to serve as a key growth engine, our growth was broad-based across service provider, enterprise, government, and cloud customers, and reflects continued demand for higher capacity optical infrastructure, AI-driven networking expansion, and secure connectivity. We are also generating tangible benefits from our diversification strategy.

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

Revenue from enterprise, government, and cloud customers grew a strong 47% year-over-year and 19% sequentially, accounting for 25% of total company revenue in the quarter. Within this customer segment, revenue from hyperscalers increased 97% year-over-year, underscoring the strength of our diversification strategy. This momentum is being driven primarily by our data center interconnect business. In parallel, we continue to expand engagements with hyperscalers and large-scale content providers for our upcoming MicroMux Quattro and the LiteWave800 pluggable optics solutions. The results highlight our growing participation in attractive end markets beyond our traditional service provider base and reflect the opportunities created by continued investment in cloud and AI infrastructure. As we broaden our customer adoption and expand our solutions footprint, we believe we are well positioned to benefit from these longer-term growth trends. Secure connectivity is another area where we continue to drive increasing customer demand.

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

Our recently announced collaboration with euNetworks highlights growing demand for quantum-safe networking solutions and validates the strength of our multilayer encryption portfolio and integrated cryptographic management capabilities as service providers and enterprises place greater urgency on addressing quantum secure vulnerabilities. Within our service provider segment, we continue to unlock opportunities driven by vendor replacement programs, network modernization initiatives, broadband expansion efforts, and increasing security requirements. These trends are driving investment across transport and access networks and position us to benefit from large-scale broadband initiatives such as BEAD in the U.S., Project Gigabit in the U.K., Germany's Gigabit Strategy 2030, and Italia 1 Giga, alongside growing demand streaming from European network security and trusted vendor initiatives, including the proposed EU Cybersecurity Act 2, or CSA 2. Now some specifics of our product categories. Optical networking revenue was $109.7 million, up 22% year-over-year and 13% sequentially.

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

Access & Aggregation Solutions revenue was $86.9 million and was directly impacted by the customer timing dynamics I discussed earlier. Subscriber Solutions revenue was $84.5 million, reflecting normal variability following a very strong first quarter. Subsequent to quarter end, we strengthened our financial foundation through the completion of a senior secured credit facility. This refinancing lowers borrowing costs and extends maturities, providing additional financial flexibility as we execute our long-term strategy. In summary, the underlying drivers of our business remains intact, and demand for our products is strong. Although the company's gross margin performance has continued to improve over the last three years, including being able to overcome the product and freight cost increases we have experienced over the last few quarters, Q2 results reflected a tightening of supply, which resulted in unfavorable product mix as our ability to ship higher margin products was impacted, and ultimately lowered gross margins.

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

The supply chain outlook remains uncertain, we continue to advance actions that will strengthen our margins and better align our performance with our long-term operating objectives of 42%-43% gross margin. Amidst the current supply environment, we are maintaining strong operating expense control and remain committed to our 10% non-GAAP operating margin target. We continue to gain momentum in optical networking, further diversifying our customer base and see a clear path forward towards improving profitability. We remain confident in our strategy and our ability to create long-term shareholder value. With that, I'll turn the call over to Tim to review our financial results in greater detail and follow up with questions. Tim?

[Tim Santo, CFO at ADTRAN Holdings]

Thank you, Tom, and thank you all for joining us today. Revenue for the quarter was $281.1 million, representing growth of 6.1% compared to the second quarter of 2025. Geographically, U.S. revenue was $134.4 million, representing approximately 48% of total revenue, up 12% year-over-year. Non-U.S. revenue was $146.7 million, representing approximately 52% of total revenue and up 1% year-over-year. By product category, Optical Networking Solutions revenue was $109.7 million or 39% of total revenue, increasing 22% year-over-year and 13% sequentially. Access & Aggregation Solutions revenue was $86.9 million or approximately 31% of total revenue. Wel down 5% year-over-year and 4% sequentially, U.S. access and aggregation revenues were up a healthy 13% year-over-year, partially offsetting the non-U.S. customer order timing described earlier.

[Tim Santo, CFO at ADTRAN Holdings]

Subscriber Solutions revenue was $84.5 million, or 30% of total revenue, up 1% year-over-year and down 14% sequentially following a strong first quarter. Turning to margins. non-GAAP gross margin was 40.7% compared to 41.4% in the second quarter of 2025 and 43% in the first quarter of 2026. Gross margin reflected the factors Tom discussed earlier, primarily the combination of product mix, customer mix, and higher product costs. non-GAAP operating expenses were $103.9 million compared to $103.3 million in the first quarter of 2026 and $101.7 million in the second quarter of 2025. As we continue to actively manage operating expenses related cost against inflationary pressures. non-GAAP operating income was $10.6 million, resulting in non-GAAP operating margin of 3.8% compared to $8 million and 3% on a year-over-year basis, however, down from $19.9 million and 6.9% on a sequential basis.

[Tim Santo, CFO at ADTRAN Holdings]

Non-GAAP tax expense during the quarter was $2.6 million, reflecting an effective non-GAAP tax rate of 33.7%. non-GAAP net income attributable to ADTRAN Holdings was $3.4 million, or $0.04 per diluted share compared to breakeven results in the second quarter of 2025 and $11 million and $0.14 in the prior quarter. Turning now to the balance sheet and cash flow. We continued to make progress improving our working capital metrics during the quarter with $245.2 million of net working capital at quarter end. Inventory was $208.8 million, with days' inventory outstanding of 107 days, down three days sequentially. Trade accounts receivable were $205.8 million with DSO of 67 days, down one day sequentially. Accounts payable were $169.3 million, with DPO of 65 days, also down one day sequentially. These improvements contributed to operating cash flow of $25.9 million during the quarter, and free cash flow of $8.7 million.

[Tim Santo, CFO at ADTRAN Holdings]

We ended the quarter with $79.2 million of cash and cash equivalents, net repurchases of ADTRAN Networks SE shares and dividend payments made during the quarter of $22.6 million. This compared to $88.3 million at March 31st, 2026. Also of note, we recently completed the refinancing of our credit facility led by JPMorgan. This new facility replaces our prior credit agreement while maintaining total revolver capacity, reducing borrower costs by 200 basis points, and extending our maturity to 2031. Turning our outlook to the third quarter. We expect revenue to be between $275 million and $295 million, and non-GAAP operating margin to be between 1.5% and 5.5%. Our outlook reflects the current expectations regarding customer deployment timing, supported by continued strength in the Optical Networking Solutions business, healthy demand across cloud, enterprise, and government markets. This concludes our prepared remarks.

[Tim Santo, CFO at ADTRAN Holdings]

However, before turning the call back to Tom, I'd like to note that we'll be participating in the Rosenblatt Virtual Technology Summit on August 17th and the B. Riley TMT Conference in New York on September 10th. We hope to see many of you there. With that, I'll turn the call back to Tom.

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

Thanks very much, Tim. Okay, at this point, we're ready to open up for any questions people may have.

[Operator]

We will now begin the question and answer session. If you would like to ask a question at this time, just press star followed by the number one on your telephone keypad. If you would like to withdraw your question, press star one again. We'll pause for a moment to compile a Q&A roster. Our first question comes from the line of Irvin Liu with Evercore ISI. Irvin, please go ahead.

[Irvin Liu, Analyst at Evercore ISI]

Hi, thank you for the question. Tom, can you help us understand the nature of the project delay at the single large customer? Is this more of a financial or strategic decision on their end? What gives you assurance that this is demand deferred and not demand destroyed?

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

Well, the biggest assurance that we have, and of course, we do talk to them on a very regular basis, but the biggest assurance that we have is they've come out and recommitted to their plan, including the timing of their plan, and it's a very visible, very easy to check on number. Those plans haven't changed. I think really what may be a high-level way to look at it is they have multiple plans now in flight. Some of them include the normal footprint expansion that we have been involved in for a few years now. Some of it has to do with Huawei replacement or vendor replacement, which is kicking off. Some of it has to do with upgrades and speed, and then some of it has to do with expanding that footprint expansion to even a greater extent than they had initially planned.

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

All of those are in flight, what we're seeing right now is a repositioning of priorities within those different buckets, we may see one of the other ones kick in. We expect to see one of the other ones kick in sooner than originally planned. This is all just getting all the plans in place before they move forward, they have enough inventory to continue to deploy at their committed rate as they reposition these plans. Did that answer the question?

[Irvin Liu, Analyst at Evercore ISI]

Got it. Thank you.

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

Did that make sense? I know it's a long, drawn-out answer.

[Irvin Liu, Analyst at Evercore ISI]

That did, Tom. Thank you. For my follow-up, I guess it's good to see your commitment to your 10% operating margin target, you're currently at low to mid-single digits due to product mix headwinds in addition to component and freight cost headwinds. Can you discuss any sort of margin mitigation strategies you might have, walk us through the path from low to mid-single digit operating margins currently to perhaps low double-digit margins longer term?

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

Sure. Maybe the easiest way to think about that, of course, the bigger driver in all of this is revenue. We had envisioned on our basically historical profile of getting into that double-digits right around the low 300s, say somewhere between 310 and 320. That assumes a gross margin in the 42%-43%. That gross margin this quarter, and I will say it was this quarter, and I don't want to at all minimize the fact that it was low, but we've had over two years, almost three years now, of raising gross margins pretty much every quarter over any significant length of time. You can just see the trend moving upwards. That's benefited us. Of course, that allows that revenue number to be lower. When I think about the 310 and 320, that's in the midpoint of where our margin has been.

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

The environment is tougher, and really the way that it impacted us this last quarter was it got rid of some of our flexibility. We saw the decline with our large customer, and we had plenty of demand. The problem is the pluggables are really hot right now. Those are not high-margin products. We shipped a significant amount of those. We could have shipped a whole lot more if we had access to them. Some of the higher gross margin products were also just limited in supply. Our flexibility got impacted this quarter. I think that flexibility problem is not a fixed next quarter problem. We've factored that into our numbers. Now, what we're doing, one, we can, of course, raise prices. I don't want to over-[rotate] on that knowing that there was a mix problem more so than anything else.

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

We have already executed on our price increases, and we continue to keep our pricing in check with what we think the supply environment is going to be when those products ship. We'll continue to execute on that. We have started doing some redesigns, and that's just to give us more supplier flexibility. I think the gross margin piece is not, I don't worry so much about gross margin because I don't think we're in a really bad place. I think we do have a mix issue, we need to make sure that we can continue to supply no matter what happens. We have kicked off redesigns in order to effectively mitigate supply issues, which ultimately will improve gross margins. As we had talked about maybe a year ago or so, we continue to move on reducing our OpEx in our COGS-related areas.

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

We're seeing some benefit in gross margin, although it was hard to actually see through that this quarter.

[Irvin Liu, Analyst at Evercore ISI]

Got it. Thank you.

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

Okay.

[Irvin Liu, Analyst at Evercore ISI]

That did.

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

All right. Thank you.

[Operator]

Our next question comes from the line of Ryan Koontz with Needham & Company. Ryan, please go ahead.

[Ryan Koontz, Analyst at Needham & Company]

Great. Thanks. Maybe just following up on the last question, and your comment about supply impacts on higher gross margin products. I think we've all been assuming that memory's been a big concern, mostly impacting the CPE side of the business, and maybe we saw some of that in the quarter with customers running inventory hotter or maybe even some pull forward before price increases that drove the big uptick in Q1. Maybe you can unpack the customer prem side gross margin trend as well as your comment around higher gross margin products that were impacted on supply. Thank you.

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

Yeah, sure. It is more than memory. I hope I'm not the first one to tell you guys that, but it has gotten tighter in other areas. Optical amplifiers are definitely tight. There are certain pieces of silicon that are fairly nebulous that are getting very tight. It is a broader base set of problems. There are some areas where even PC boards are getting tight. What's really important, the way that it impacts us is we still tend to book a lot of what we ship within the quarter. That ability to flex up for incremental demand, which we definitely saw this quarter, especially in optical. Our ability to flex up has really diminished, our forecasting is more important.

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

I would say the hardest thing at this point, I'm sure we've talked about in the past, memory was one of those things. I wasn't so much worried about the pricing of memory. I could pass a lot of that on. What I couldn't do, though, is make supply that wasn't there. It was all about getting memory. At least in our supply chain, memory today is not the biggest issue, right? There are issues that have eclipsed that, and memory is, although incredibly expensive, that supply isn't as problematic as it was, let's say, six months ago or three months ago.

[Ryan Koontz, Analyst at Needham & Company]

Got it. That's really helpful.

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

Okay.

[Ryan Koontz, Analyst at Needham & Company]

Maybe as a follow-up, your comment around optical and the strength you're seeing in enterprise and cloud. What sort of use cases are you seeing there? Is this mostly for your line systems? You talked about pluggables. Can you give us any color on product mix there within the enterprise and cloud use cases would be really helpful. Thank you.

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

Yeah. Definitely on OLS as well as just standard pluggables. I would say across the board, it was high. I will tell you, OLS or our line systems were a little more difficult to ship because of the constraints that we just talked about. Pluggables is, generally speaking, upgrading of bandwidth, and as you know, we have some hyperscaler content there, and we're seeing a significant uptick in that activity as people are trying to upgrade their networks. I think it's all just about bandwidth increases, not so much footprint, but just bandwidth increases.

[Ryan Koontz, Analyst at Needham & Company]

Got it. Really helpful. Thank you very much.

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

Okay. All right.

[Operator]

Our next question comes from the line of George Notter with Wolfe Research. George, please go ahead.

[George Notter, Analyst at Wolfe Research]

Hi, guys. Thanks a lot. I was just trying to get a better sense for where you guys are on the balance sheet. I know there was some talk about the real estate transactions. Kind of wondering where you are on those. Any update would be great. Thanks.

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

Tim, you want to grab that?

[Tim Santo, CFO at ADTRAN Holdings]

Yes, will do. Morning, George. The best news there is Huntsville is very hot. The first 600 or so individuals for U.S. Space Command will have seats in housing by the end of this year. We've seen a large uptick in military defense and other contracts being awarded to the Huntsville area, and that has driven up significantly the interest in our property. Beyond that, George, when we have something to announce, we will announce it, but we're continuing to hold out for the best deal and the best opportunity for the company.

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

Let me just add a little, because I also am very nervous about trying to pre-forecast something, but our showings on that property have gone up substantially over the last couple of months.

[Tim Santo, CFO at ADTRAN Holdings]

That's right.

[George Notter, Analyst at Wolfe Research]

Great. Thank you.

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

All right.

[Operator]

Our next question comes from the line of Bill Dezellem with Tieton Capital Management. Bill, please go ahead.

[Bill Dezellem, Analyst at Tieton Capital Management]

Yeah, thank you. You put out a press release this morning relative to TOHKnet and them beginning the trial. Would you talk a little bit about that? The spirit of which I ask this is I don't recall ADTRAN being in Japan historically, so provide some backdrop there if you would, please.

[Tim Santo, CFO at ADTRAN Holdings]

Yeah, to be honest with you, I don't have that press release in front of me, but we do sell into Japan. This was in the optical space that we have sold for some period of time. I wish I did have that press release in front of me, Bill, but I don't.

[Tim Santo, CFO at ADTRAN Holdings]

[inaudible]

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

Oh, okay. Yeah. Japan is an interesting area because they were one of the first to build out GPON, the population base is pretty much covered, and they are, I would say, leading the charge in moving to 50 gig. We have a lot of people that are trialing 50 gig and want to have marketing capabilities around 50 gig. I would say from a country perspective, Japan is probably at the forefront of literally looking at making that transition more wholesale. This is just that.

[Bill Dezellem, Analyst at Tieton Capital Management]

Great. Thank you. Relative to the supply issues and the customer schedule adjustment, how does all of this affect 2027? I guess another way to ask that is, the second half of 2026, is that a long enough period to adjust component supply chain and make these various adjustments that you need to be back on track? Is this a longer sort of adjustment period?

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

Let me answer that a couple different ways, and I'll try to be as direct as I can. One is, the root cause of the situation was really born from a dynamic within a particular customer, which we think will be worked out before the end of the year. If it weren't for that root, we would not be talking about this. It did highlight in going through the quarter, once that effect kind of permeated through the company, it did highlight the fact that flexibility within the rest of the product set is getting tighter and tighter. I want to first put it in the right frame. I don't see that tightness going away in the near term.

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

I do know, probably many people on this call know that there is talk about additional capacity, especially in the higher nanometer process, which is kind of where our products are, let's say 12 and up, coming online next year, which would alleviate some of these issues that we're talking about. I think we're just in a tighter supply chain environment, the best way for us to be able to mitigate that tightness is literally just better forecast, more order coverage. I preach that to our customers every time I can. "You need to get your orders in." We need to be able to have visibility to it, we need to secure supply. I do think the customers are getting It's amazing. It's taken a long time, but I do think customers are getting it.

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

I can tell you what would mitigate a particular chip today, I can tell you it'll be a different chip or a different problem six months from now. I just think we're living in a tight period right now, and I can't tell you it's going to disappear next year, or what quarter it would disappear if it does disappear next year. I think it's all about discipline with internally. As we've talked about, we've gotten some more key components in our inventories now to make sure that we can mitigate the problems that are known. This quarter, there was issues that were not an issue last quarter, right? We have to get better at forecasting where those future issues will be, not just the ones that we're currently facing. That's not a good answer, but that's kind of the environment we're in.

[Bill Dezellem, Analyst at Tieton Capital Management]

No, that is helpful, I'll ask one more question before I hop off, Tom. Does that imply that we should anticipate you all kind of building extra inventory in certain areas so that you can adjust that flexibility, not with your supply chain, the product mix flexibility, not through the supply chain as much as just through your own warehouse, for lack of a better phrase?

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

Yeah. It does imply that, and I will tell you that has been happening already. You just haven't seen it so much. The reason is, we've been able to draw down old inventory from the supply chain crisis, down to a point to where we're kind of mitigating that increase. You can think about it as old inventory versus new inventory, and that new inventory is directly related. Our inventories would be going down more if we weren't adding these kind of key components. At some point in time, that old inventory's going to not be so old anymore, and you'll see an uptick in that inventory. I don't think it'll be material to the numbers.

[Bill Dezellem, Analyst at Tieton Capital Management]

Great. Thank you for taking all the questions.

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

Sure.

[Operator]

Our next question comes from the line of Dave Kang with B. Riley Securities. Dave, please go ahead.

[Dave Kang, Analyst at B. Riley Securities]

Good morning. Thank you. First question is, wondering if you can provide what book-to-bill was and more interested in Optical book-to-bill, if you can provide those?

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

We really don't do book-to-bill as a metric that we actually publish. I will tell you Optical was probably the, I'm guessing here, but probably the strongest area. Let's just say all the numbers were either at one or above one.

[Dave Kang, Analyst at B. Riley Securities]

Got it. Regarding the revenue miss, obviously it was a project delay. It sounds like if you had enough components that you would've made up that revenue. Was that the message? Basically, you're saying that?

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

Yes

[Dave Kang, Analyst at B. Riley Securities]

demand is so strong that it would've made up that $12 million revenue shortfall if you had enough components.

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

Yes. Without a doubt. I mean, no hesitation at all. If we had plenty of material, we would not be talking about the downtick.

[Dave Kang, Analyst at B. Riley Securities]

What about the current third quarter? Can you talk about that project delay, where you are, also, you talked quite a bit about supply situation, how that's going to play out in third quarter. Obviously, we're looking for sort of a flattish quarter sequentially.

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

Yeah. We don't see an uptick in the customer that we're talking about right now. To be honest with you, we just don't see a change in the procurement environment. We think things are going to stay in the kind of status quo that they're in right now, maybe even get a little bit tighter in certain areas. We are fighting for more supply. I mean, literally we have people calling every day trying to get more of whatever it is that we have on order or don't have on order. That's just kind of seeing through that mix of what's going to be available and what's not going to be available is kind of what our forecasting process has turned into. Yeah, it's just assuming the environment doesn't change.

[Dave Kang, Analyst at B. Riley Securities]

Well, I think, I was juggling a couple of things. Obviously you've seen that this FCC planning to ban Chinese transceivers. Just wondering if you were sourcing transceivers or pluggables from Chinese vendors, and if so, how quickly can you pivot to American vendors?

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

We do some pluggables from China. Let's say, transceivers from China. We also source from other places. I don't know I'm not versed enough to give you a direct answer to that's something that we can cover at, you can call in and we can talk more about it.

[Dave Kang, Analyst at B. Riley Securities]

Yeah

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

I'll back.

[Dave Kang, Analyst at B. Riley Securities]

It's clearly a fluid situation. I'm sure there are really a lot of questions there. My last question is, any update on LPO activities? Any qualification?

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

Yeah.

[Dave Kang, Analyst at B. Riley Securities]

Yeah.

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

Well, we're not talking about qualification yet. It is still on track, as I talked about before, why we would get units in right around the half or second quarter, get them to customers. I will tell you another piece of this, which we haven't really talked much about, which is the MicroMux Quattro. We've got multiple customers, including multiple hyperscalers that are very interested in that product as well. That one actually delivers earlier, so I would expect to see trial units before, let's say, sometime in the first quarter. We have people right now that are trialing alpha units, and that seems to be going well. I think both of them are on track, but both of those are getting some traction, so that seems to be going well.

[Dave Kang, Analyst at B. Riley Securities]

Thank you.

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

Okay.

[Operator]

Our next question comes from the line of Tim Savageaux with Northland Capital Markets. Tim, please go ahead.

[Tim Savageaux, Analyst at Northland Capital Markets]

Yeah. Hey, good morning. I think you mentioned a growth metric around the cloud portion. Talked about 25% of revenue being from government enterprise. I think it was something in the 1990s in terms of cloud growth. I just want to go back and confirm that, and also try to get a sense of within that 25% of revenue, how large is the cloud piece? I'll follow up from there.

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

Yeah. Let me see if I have that. I don't think I have the number, but I do kind of generally know where we are in that space. The specific number that we gave was, I think it was 97% growth in hyperscalers. We look at cloud as being broader than hyperscalers, because that would include typically large content cloud providers. Hyperscalers specifically, was 97%. That's not a surprise. I think we kind of signaled in our last call that that area we expected to be solid this year and continue to grow, and that seems to be the case. What was the second part of your question, Tim?

[Tim Savageaux, Analyst at Northland Capital Markets]

I was just trying to get a sense of within that category however you want to describe it, how significant is that? I assume that's a relatively small percent of that 25%

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

No

[Tim Savageaux, Analyst at Northland Capital Markets]

Of the broader category.

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

It's not. My sense and just from remembering is it's somewhere between 30% and 50%. It's getting to be a big piece of that pie of that 25%.

[Tim Savageaux, Analyst at Northland Capital Markets]

Okay. Excellent. Yep. No, I got it. Just a quick one, any 10% customers in the quarter? As you look out to the Q3 guide I'd be interested in what's happening there from a segment perspective. It sounds like you don't expect Access & Aggregation to rebound given the customer push. You've got a little sequential growth there. I guess the overall question is, do you expect to see Optical continue to grow?

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

Yes. Direct answer is absolutely yes. I talked a little bit about the order flow there. Yes. We expect that to grow. Subscriber is one of those that's probably the most difficult thing to forecast, because it is very much demand driven and people buy chunks of inventory, and then they go away for a while. You'll always see more volatility. I'll say typically see more volatility in that subscriber piece. That one's less firm in our numbers in knowing exactly where it's going to end up. Access and ag, you're right. We don't expect a rebound because that single customer is such a large piece of that content. I will tell you that access and ag in Europe, notwithstanding that customer, was actually pretty strong, and we continue to expect that strength in the third quarter. Optical is going to be the biggest.

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

I can confirm there were no 10% customers this quarter.

[Tim Savageaux, Analyst at Northland Capital Markets]

Great. Thanks very much.

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

Okay.

[Operator]

Our next question comes from the line of Michael Genovese with Rosenblatt Securities. Michael, please go ahead.

[Michael Genovese, Analyst at Rosenblatt Securities]

Thanks. Hey, Tom. I want to ask more about pluggables. I want to clarify a couple things on the call. When you mentioned the mix shift earlier and that you were selling more pluggables, could you just talk about what business specifically that was in and which were kind of pluggables and selling more pluggables as opposed to, I guess, embedded systems and optical? Is that for DCI and long haul in metro? Is that what you were talking about?

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

Yes, more specifically, I will tell you we probably had the strongest 100ZR quarter we've ever had. That should tell you kind of what we're talking about.

[Michael Genovese, Analyst at Rosenblatt Securities]

Okay. That makes sense. You've just mentioned earlier the quad, because we were, I guess, asking about the LPO product, which I think has a different name. The quad, could you talk more about the difference between those two products?

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

Yeah, the other product that we've talked about that got a lot of press was the LiteWave800.

[Michael Genovese, Analyst at Rosenblatt Securities]

Yes.

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

The quad is actually a 4x100. It's in the MicroMux family, it's a 4x100 mux that's very efficient. I don't know if there's anything out on the market today that's like that. It plugs right into a router and gives you multiplexing capability at a very low cost.

[Michael Genovese, Analyst at Rosenblatt Securities]

Okay. Sorry. If I'm not mistaken, though, the LiteWave800 is different from these products because it's a new market of inside the data center for you as opposed to between data centers where most of your business is now. Is that a correct understanding?

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

Yes. The LiteWave800 is intra data center, which, yeah, we have not played in that space. We don't have a MicroMux product either, by the way. Both of these are kind of incremental to the piece that we have traditionally done. I would say the LiteWave is a farther reach, yes.

[Michael Genovese, Analyst at Rosenblatt Securities]

Okay. The timing, though, is the MicroMux is earlier in 2027, the LiteWave is mid 2027. Is that correct?

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

The MicroMux is going to be out earlier. We should be trialing units end of this year or early next year. The current schedule for the LiteWave800 is getting units trialing middle of next year. We're saying into Q2. Production towards the end of the year or the first part of the following year.

[Michael Genovese, Analyst at Rosenblatt Securities]

Okay, great. Just a final question from me. I guess maybe it's a two-part question, but with the transceivers for inside the data center, this is a very large market, right? It's a new TAM that you're going into, and I'm kind of used to seeing deals there being, like you don't get $25 or even $50 million deals. Every time I see somebody win a transceiver deal, it's at least $100 million, and it could be $1 billion. I'm just wondering if the larger deal sizes as you start to work on that market make sense to you, if that sounds reasonable.

[Michael Genovese, Analyst at Rosenblatt Securities]

Just your ability to sell into that market and to have a sales force that interacts with that side of the customer and to kind of, it's a big TAM, but basically the confidence of ADTRAN that they can execute in that market from a sales and I mean, the product specs look great. If we can assume you can make the product, are you confident that you can sell the product?

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

Yeah. Michael, We sell to most of these customers already. Now we sell different products. Most of them have, for instance, like I mentioned before, hyperscaler was the fastest growing area in our enterprise segment. It was a significant contributor. They know who we are. I would say without a doubt. We've even sold access products to one of the hyperscalers that was really into access. They know who we are. I don't think there's a trust problem with thinking that we can scale and that we build quality products. We have increased our sales force into that area to make sure that we're covering all of the bases. We've already done that. We're trying to get all the pieces in the right place.

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

It's not like they won't have heard us. I doubt if there'd be any issue with worries about scalability with us. In relation to the numbers that you're talking about, you are correct. I think my job is to not get us too overhung out there. We need to be able to deliver what we need to be able to deliver, the numbers are typically bigger than the numbers that we're talking about.

[Michael Genovese, Analyst at Rosenblatt Securities]

Great. Okay. Thanks so much. Appreciate it.

[Tom Stanton, Chairman and CEO at ADTRAN Holdings]

All right. Thus I see that we're at the end of the call list. I appreciate everybody for joining us today. We look forward to talking to you next quarter.

[Operator]

This concludes today's call. You may now disconnect.

Participants

Executives

• Tom Stanton, Chairman and CEO
• Tim Santo, CFO

Analysts

• Irvin Liu, Analyst at Evercore ISI
• Ryan Koontz, Analyst at Needham & Company
• George Notter, Analyst at Wolfe Research
• Bill Dezellem, Analyst at Tieton Capital Management
• Dave Kang, Analyst at B. Riley Securities
• Tim Savageaux, Analyst at Northland Capital Markets
• Michael Genovese, Analyst at Rosenblatt Securities